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From "Koji Noguchi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PIG-3295) Casting from bytearray failing after Union (even when each field is from a single Loader)
Date Tue, 03 Sep 2013 16:52:52 GMT

     [ https://issues.apache.org/jira/browse/PIG-3295?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Koji Noguchi updated PIG-3295:
------------------------------

    Attachment: pig-3295-v02.patch

Just noticed my previous patch wasn't created with '--no-prefix' option. Reattaching.
                
> Casting from bytearray failing after Union (even when each field is from a single Loader)
> -----------------------------------------------------------------------------------------
>
>                 Key: PIG-3295
>                 URL: https://issues.apache.org/jira/browse/PIG-3295
>             Project: Pig
>          Issue Type: Bug
>          Components: parser
>            Reporter: Koji Noguchi
>            Assignee: Koji Noguchi
>            Priority: Minor
>         Attachments: pig-3295-v01.patch, pig-3295-v02.patch
>
>
> One example
> {noformat}
> A = load 'data1.txt' as line:bytearray;
> B = load 'c1.txt' using TextLoader() as cookie1;
> C = load 'c2.txt' using TextLoader() as cookie2;
> B2 = join A by line, B by cookie1;
> C2 = join A by line, C by cookie2;
> D = union onschema B2,C2; -- D: {A::line: bytearray,B::cookie1: bytearray,C::cookie2:
bytearray}
> E = foreach D generate (chararray) line, (chararray) cookie1, (chararray) cookie2;
> dump E;
> {noformat}
> This script fails at runtime with 
> "Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR 1075: Received
a bytearray from the UDF. Cannot determine how to convert the bytearray to string."
> This is different from PIG-3293 such that each field in 'D' belongs to a single loader
whereas on PIG-3293, it came from multiple loader.

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